Music-leaf turner.



No. 746,991. PATENTED DEC. 15, 1903.

L. POULIN'.

MUSIC LEAP TURNER.

APPLICATION FILED OOT.30, 1902.

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No. 746,991. I PATENTED DEC. 15, 1903. L. POULIN. MUSIC LEAP TURNER.

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Patented December 15, 1903.

PATENT OFFICE.

LUCIEN POULIN, OF BUTTE, MONTANA.

MUSEC- LEAF TU RNER.

SPECIFICATION forming part of Letters Patent No. 746,991, dated December 15, 1903.

7 Application filed October 30, 1902- Serial No. 129,401. (No model.)

To all whom it may concern:

Beitknown thatI,LUOIENPOULIN,acitizen of the United States, and a resident of Butte, in the county of Silverbow and State of Montana, have invented new and useful Improvements in Music-Leaf Turners,of which the following is a full, clear, and exact description.

This invention relates to improvements in m usic-leaf turners, the object being to provide a simple mechanism by means of which the leaves of music may be readily turned in either direction and not interfere with the playing of a musical instrument.

I will describe a music-leaf turner embodying myinvention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure 1 is a front elevation of a music-leaf turner embodying my invention. Fig. 2 is an edge view thereof. Fig. 3 is a front view of the turning mechanism with the front of the casing removed. Fig. a is a sectional elevation of the turning mechanism on the line m m of Fig. 3. Fig. 5 is a plan view of said mechanism, and Fig. 6 is a detail showing certain guides for push-rods the openings in which are enlarged to permit outward or lateral play of the rods.

Referring to the drawings, 1 designates a music-rack on the lower portion of which is a spring-pressed pin 2 for engaging between the leaves of music to hold the music on the rack. Secured to the upper edge of the rack is a casing 3, which contains turning mechanism which comprises a series of cam-carrying disks 4, 5, 6, '7, 8, and 9. These several disks are mounted on a sleeve 10, which rotates on a rod 11, extended through the casing. Each camdisk carries a laterally-extended tooth having an inwardly-curved cam-surface 12 and an outwardly-curved cam-surface 13. These several cam devices are arranged in staggered relation, so that the several cam-disks practically form aspiral. The parallel or straight surfaces between adjacent disks permit of the turning of the several disks together, so that one cam-surface only will act at a time to turn a leaf.

Arranged on the top of the casing are swinging arms 14, which have clips 15 on their outer ends for engaging with the leaves of the music. These arms at their inner ends have pivots 16, said pivots having hearings in a plate 1'7, extended forward from an upright 18, and at the lower edge the arms are provided with pivots 19, which have hearings in perforations in the top of the casing. Attached to the inner end of each arm is a cranked finger 20. These fingers extend down through an opening 21 in the top of the casing and project between the cam-carrying disks, as clearly illustrated in Fig. 3.

Attached to one end of the sleeve 10 is a ratchet-wheel 22, which has a number of teeth equal to the number of arms, and attached to this ratchet-wheel is a stop-ratchet 23, which has a number of teeth corresponding to that of the wheel 22. Mounted to swing on the rod 11 is a lever 2a, to the upper end of which is pivotally connected a longitudinally-curved pawl 25, which at one end carries a pin 26 for engaging the ratchet-wheel 22 and at the other end it carries a pin foi engaging with the stop-ratchet 23. This last-named pin is not shown in connection with the pawl 25; but it is shown in connection with a corresponding pawl at the opposite end, which will be hereinafter described.

A spring 27 is connected to the lever 24: and extends over the upper end thereof and con nects with a pin extended from the pawl 25. This spring serves to throw the pin 26 into engagement with the ratchet-wheel, as will be more fully described. To the lower end of the lever 2a is pivotally connected a link 28, the lower end of said link being pivoted to an arm 29, attached to rock-shaft 30, which is moved to a normal position by means of a spring 30, coiled around the shaft and connected at one end to the shaft, while the other end is connected to the casing. An arm 31 is rigidly attached to the rock-shaft 30, and from this arm 31 a push-rod 32 extends down the back of the rack l, and this pushrod is connected,by means of a link 33, with a finger-lever 34, which extends underneath the rack and in front thereof. The rod 32 is moved downward by means of a spring 35, surrounding the rod and hearing at its lower end on a collar 36, attached to the rod, while its upper end bears against a plate 36 attached to the back of the rack and through which the rod passes. At the opposite end of the sleeve 10 is a ratchet mechanism similar to that first described, except that the teeth are arranged in an opposite direction. This mechanism consists of a ratchet-wheel 37 and a ratchet-wheel 38, these wheels being similar to the wheels 22 and 23. A lever 39 is mounted to swing on the rod 11,and to the upper end of this lever is pivoted a pawl 40, having a pin 41 at one end for engaging with the ratchet-wheel 37 and at the opposite end a pin 42 for engaging with the ratchet-wheel 38. There is a spring connection 43 between the lever 39 and the pawl similar to that first described and operating in the same manner. A link 44 connects the lower end of the lever 39 with an arm 45, attached to a rock-shaft 46, and on this rock-shaft46 is a crank-arm 47, having connection with a push-rod 48, operated in a similar manner to the push-rod 32.

The swinging arms 14 are provided at their inner ends with lugs 49, which bear against a spring-plate 50, so as to prevent accidental swinging of said arms. The tension of this spring may be adjusted by means of a screw 51, engaging with the free end of the spring. On the front of the casing is a spring-pressed finger 52 for engaging with the music.

The operation is as follows: As indicated in Fig. 3, three arms have been turned to the left. When it is necessary to turn the next leaf, the push-rod 48 is to be forced upward, which will cause a rocking movement of the lever 39, releasing the pin 42 from the ratchetwheel 38, and then the spring 43 will rock the pawl and carry the pin 41 into engagement with a tooth 0f the ratchet-wheel 37. Then upon releasing the finger-lever attached to the rod 48 a coiled spring on the rock-shaft 46 will move it to its normal position, consequently moving the lever and pawl, which will carry the cam-carrying disks through one space. The cam on the disk 5 by engaging with the cranked finger will turn the same, and consequently swing the turning-arm. The cranked finger will be moved through an opening 53 between the neXt two adjacent disks-that is, between the disks 5 and 6. When the parts approach normal position, the pin 41 will be thrown out of engagement with the ratchet-wheel 38 and the pin 42 into engagement with the stop ratchet-wheel by means of a finger 54 on the pawl 40 coming into engagement with a finger 55, rigidly attached to the rod 11. When the next leaf is to be turned, of course the same operation is to be gone through with, when the cam on the disk 4 by engaging with the finger on the last one of the arms will cause it to swing. In turning the leaves from right to left the outwardly curved cam surfaces 13 come into play; but in turning them back or from left to right the cam-surfaces 12 come into play. In turning the leaves back the mechanism at the right-hand end of Fig. 3 is to be operated through the medium of the push-rod 32 and the finger.

Having thus described my invention, I claim as new and desire to secure by Letters Patent- 1. A music-leaf turner comprising swinging arms, a series of disks, fingers attached to the arms and extended between the disks, cams carried by the disks in position to suecessively engage the fingers and means for rotating the cam-carrying disks to swing the arms one after another.

2. In a music-leaf turner, swinging arms, a series of rotary disks, cams extended laterally from the disks, the cams of the several disks being arranged in spiral relation, and the cam of one disk passing into the rotary plane of the next disk, cranked fingers attached to the arms and extended between the disks, and means for imparting rotary motion to the disks.

3. A music-leaf turner comprising swinging arms, a series of disks mounted to rotate, lateral projections on the disks, the opposite edges of said projections being oppositely curved, the projection of one disk passing into the plane of the next adjacent disk, cranked fingers attached to the arms and extended between disks, and means for rotating the disks in opposite directions.

4. A music-leaf turner comprisingacasing, a series of cam-disks mounted to rotate in the casing, the cams on the disks being arranged in spiral relation, arms mounted to swing on the top of the casin g, cranked fingers attached to the arms and extended between the disks, means for imparting rotary motion to the disks, and a spring-yielding plate with which the inner ends of the arms engage.

5. In a music-leaf turner, a combination with swinging arms, of a series of disks mount ed to rotate, each disk having a lateral projection inwardly curved at one edge and outwardly curved at the other edge, the several projections being arranged in spiral relation, cranked fingers extended from the arms to positions between the disks, means for rotating the disks to turn the leaves in one direction, and means for rotating the disks to turn the leaves in the other direction.

6. In a music-leaf turner a casing, a rod extended through the casing, a sleeve mounted to rotate on the rod, a series of cam-carrying disks attached to said sleeve, ratchetwheels attached to the ends of said sleeve, stop-ratchets attached to the ends of the sleeve, levers mounted to swing on the rod, pawls carried by said levers and adapted to engage alternately with the first named ratchet-wheels and the stop-ratchets, means for independently operating the pawls, and leaf-turning arms operated by said cams.

7. In a music-leaf turner a rotary part, a series of cams carried by said rotary part, ratchet-wheels on the opposite ends of said rotary part, leaf-turning arms operated by IIO the cams, rocking levers, pawls carried by} In testimony whereof I have signed my said levers for engaging with the ratchetname to this specification in the presence of wheels, rock-shafts, connections between said two subscribing witnesses.

rock-shafts and said levers, springs for mov- LUOIEN POULIN. 5 ing the rock-shafts in one direction, arms ex- Witnesses:

tended from the rock-shafts, and push-rods H. STE. MARIE,

connecting with said arms. W. E. POULIN. 

